diff --git a/src/pretix/base/models/event.py b/src/pretix/base/models/event.py
index 6350c9109..e42bcc242 100644
--- a/src/pretix/base/models/event.py
+++ b/src/pretix/base/models/event.py
@@ -559,7 +559,8 @@ class Event(EventMixin, LoggedModel):
 
         self.plugins = other.plugins
         self.is_public = other.is_public
-        self.date_admission = other.date_admission
+        if other.date_admission:
+            self.date_admission = self.date_from + (other.date_admission - other.date_from)
         self.testmode = other.testmode
         self.save()
         self.log_action('pretix.object.cloned', data={'source': other.slug, 'source_id': other.pk})
diff --git a/src/tests/base/test_models.py b/src/tests/base/test_models.py
index bf270261b..066789b62 100644
--- a/src/tests/base/test_models.py
+++ b/src/tests/base/test_models.py
@@ -1888,7 +1888,8 @@ class EventTest(TestCase):
     def test_copy(self):
         event1 = Event.objects.create(
             organizer=self.organizer, name='Download', slug='ab1234',
-            date_from=datetime.datetime(2013, 12, 26, tzinfo=datetime.timezone.utc),
+            date_from=datetime.datetime(2013, 12, 26, 9, 0, 0, tzinfo=datetime.timezone.utc),
+            date_admission=datetime.datetime(2013, 12, 26, 8, 0, 0, tzinfo=datetime.timezone.utc),
             is_public=True,
         )
         tr7 = event1.tax_rules.create(rate=Decimal('7.00'))
@@ -1919,7 +1920,7 @@ class EventTest(TestCase):
 
         event2 = Event.objects.create(
             organizer=self.organizer, name='Download', slug='ab54321',
-            date_from=datetime.datetime(2013, 12, 26, tzinfo=datetime.timezone.utc)
+            date_from=datetime.datetime(2013, 12, 27, 9, 0, 0, tzinfo=datetime.timezone.utc),
         )
         event2.copy_data_from(event1)
 
@@ -1927,6 +1928,8 @@ class EventTest(TestCase):
             a.refresh_from_db()
             assert a.event == event1
 
+        assert event2.date_admission == datetime.datetime(2013, 12, 27, 8, 0, 0, tzinfo=datetime.timezone.utc)
+
         trnew = event2.tax_rules.first()
         assert trnew.rate == tr7.rate
         c1new = event2.categories.get(name='Tickets')